引用:
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作者: BeBop
That's the point, to realize that 0.999...=(limx as x->1)=1 
BTW, nice put  |
基本上lim 都係計數用既姐
同埋lim x->1 係唔同既數式好多時唔可以代x=1...係會有分別的
其實應該x_->1 tim 因為0.9999... 係細過1
不過我幫人補習時係唔係都係咁頹解\
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對手係初中生時: 1/9= 0.1111111..... => 0.111111....*9 = 0.999.......= 1/9*9=1
唔明點解9成人會好相信我
雖然條式真係好似好有道理....好似...
引用:
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作者: 堂我流
 我無考過AL, CE亦係麻麻地......你唔好恰我好WO  |
呢個問題係唔同既case會有唔同既答案
基本上正常情況下都會當佢係1就得
但係某d case 唔得就會要用到limit
例如有時d式分子分母都有x....sub完x=1之後會變左0/0 o個d
